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Build Your Own Meyers Manx Beach Buggy

Dec 05, 2023Dec 05, 2023

The Meyers Manx beach buggy is arguably the most famous fiberglass kit car design in history, and now for the first time you can build one at home that's powered by a 2.0 liter radial engine offering 300+% more power than the early VW Beetle-powered buggies.

The team at Meyers Manx have been working closely with Australian company Radial Motion to develop the Radial Manx you see here – interestingly this radial engine uses off-the-shelf combustion internals from an LS1 V8 to ensure easy parts availability and it's the first kit car in history to be powered by a radial engine.

When Bruce Meyers designed and built the Meyers Manx he couldn't have known that it would become one of the most recognizable cars of the century, and almost certainly the most famous car design that didn't come from a large manufacturer.

Above Video: This is raw footage of the first radial-engine powered Meyers Manx being tested on a beach in Australia – the sound of the 3-cylinder radial is unlike anything else.

Fiberglass bodied kit cars had first appeared in the late 1940s and into the early 1950s, they offered a way for working class people to build sports cars, they just had to buy a suitable secondhand donor vehicle, remove the heavy steel body, add the lightweight fiberglass body, and then apply whatever performance tweaks they wanted.

What Bruce Meyers did was take this general concept and apply it to the VW Beetle platform to create one of the most capable off-road racing buggies of the era. His unique body design allowed the fitment of larger wheels and tires and longer travel suspension, and the whole package was so lightweight it was able to cover ground at significant speed.

The racing prowess of the car became a global news story when a Manx won the inaugural 1967 Mexican 1000 (the predecessor of the modern Baja 1000), beating a packed field of motorcycles, trucks, 4x4s, and modified cars.

Unlike many of its fiberglass kit car contemporaries the Meyers Manx is not a replica of something else, it was developed from a blank slate with this design and it's 100% authentic. This may be why the values of the Manx on the secondhand market tend to remain strong over time – unlike replica kit cars.

Here we see the late, great Bruce Meyers standing next to his most famous creation. Image courtesy of Meyers Manx.

Sadly the replica car industry would set its sights on the Meyers Manx, cheap copies were made by illegitimate companies across the USA. This ate significantly into the business of Bruce Meyers company and it ended up closing down.

Thankfully this wasn't the end of the tale – in the year 2000 the company was revived and it began selling authentic Meyers Manx kits once again with Bruce at the helm. Bruce died in 2021 at the age of 94 but not before he sold the company to a carefully handpicked successor. The company is now offering classic Meyers Manx kits, as well as the first ever production Meyers Manx electric vehicle, and the first Manx with a radial engine.

The three-cylinder radial engine developed by the Australian engineering team at Radial Motion is unique in that it's caused a wave of sustained excitement in both the aircraft world and the automotive world – as the engine can be used to power either planes or cars with only minor changes.

This angle shows you how the Meyers Manx kit was modified to fit the Radial Motion engine. A standard VW Beetle 4-speed gearbox is used, which vastly simplifies the assembly – not to mention sourcing spare parts.

The team behind the engine originally set out to develop it as an aircraft engine, however they tested it by fitting it into a car – this is when they realized the engine was ideally suited to use in lightweight sports cars. We previously featured the Porsche 356 that's powered by a Radial Motion engine, it's also been fitted to a Beetle, a Kombi van, and now a Meyers Manx.

Aircraft engines are famously expensive to buy and maintain, so the engineering brief at Radial Motion was to use as many tried-and-tested off the shelf components as possible to reduce development time, cost, and complexity. This also means that spare parts are simple to source and cheap to buy.

Each Radial Motion 2.0 liter engine uses the combustion internals from a General Motors LS1 V8, which are under far less stress than they are in a performance V8 application. All three connecting rods share a common crank pin, the engine uses pushrods to actuate two valves per cylinder, and unlike many aircraft engines this one uses regular unleaded gasoline.

Radial Motion are currently experimenting with various versions of the three-cylinder radial design including forced induction, hybrid, and diesel variants, as well as additional displacements above the current 2.0 liter level. In standard 2.0 liter naturally aspirated form it produces 130 bhp and approximately 130 lb ft of torque, with a remarkably flat power curve that makes it well suited to both aero and automotive applications.

This is the 2.0 liter version of the 3-cylinder radial engine from Radial Motion. It was originally developed for aircraft use, however they now also offer an automotive version.

The original VW Beetle engine typically produced between 30-36 bhp depending on variant and displacement (with some later engines making as much as 60 bhp), so 130 bhp is a major step up over what most 1960s-era Meyers Manx builds were producing, approximately 3x more in fact.

They radial engine-powered Meyers Manx you see here was built by the team at Meyers Manx in California in collaboration with Radial Motion in Australia.

The plan was to get this prototype running to see how the engine would perform, initial testing is now complete and the engine has performed so well that it will now be possible to order your Manx in a specification ready to accommodate a Radial Motion engine.

From the front the modern Meyers Manx looks indistinguishable from its predecessors, it's not until you hear the unusual 3-cylinder engine burble or see the rear of the car that the differences become apparent.

A kit built production version of the car will be offered, making this the first production car in history that can be ordered from the factory with a radial engine.

The low weight of the engine as well as its compact size makes it ideal, as it reduces the weight on the back of the vehicle without compromising ground clearance.

Interestingly the engine is mated to a standard 4-speed VW Beetle manual transmission, this further simplifies things as the drivetrain behind the engine can be built and maintained with off-the-shelf parts.

Meyers Manx is now taking orders for the Radial Motion 3-cylinder radial, standard VW Beetle, and other powertrain versions of the remastered buggy kits, and you can visit their website here to read more or send them an inquiry.

Images courtesy of Hagop Kalaidjian + Meyers Manx + Radial Motion

Articles that Ben has written have been covered on CNN, Popular Mechanics, Smithsonian Magazine, Road & Track Magazine, the official Pinterest blog, the official eBay Motors blog, BuzzFeed, Autoweek Magazine, Wired Magazine, Autoblog, Gear Patrol, Jalopnik, The Verge, and many more.

Silodrome was founded by Ben back in 2010, in the years since the site has grown to become a world leader in the alternative and vintage motoring sector, with well over a million monthly readers from around the world and many hundreds of thousands of followers on social media.

The Meyers Manx beach buggy is arguably the most famous fiberglass kit car design in history, and now for the first time you can build one at home that's powered by a 2.0 liter radial engine offering 300+% more power than the early VW Beetle-powered buggies. Above Video: